why are we creating a new page object twice? We can access the methods in Page class if we declare the page object only

Question

Please find the code below for more understanding of my query public class Story {

private Page[] mPages;

public Story(){
    mPages = new Page[7];

    mPages[0] = new Page();
    mPages[0].setImageId(R.drawable.page0);

//Page object is created twice as you can see in the code. Please help me understand this.

Thanks

Answer 1 · 2016-01-23T17:42:00Z

January 23, 2016 5:42pm

Hi Nishanti, I think in the first instance you are creating a new Page array. You could also write it on one line like this: private Page[] mPages = new Page[7]; The 7 is because java arrays are static and when you create them you need to specify how many objects they can hold. But at this point you still do not have any Page objects, you only have an empty array that can potentially hold Page objects. To create a Page object you need the second part. mPages[0] = new Page(); This creates a Page object at the first index of the Page array. Then you can access it and set the attribute by referencing the first index. mPages[0].setImageId(R.drawable.page0); Hope that helps.

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Nishant Jee

Nishant Jee

why are we creating a new page object twice? We can access the methods in Page class if we declare the page object only

1 Answer

Louis Sankey

Louis Sankey